Radeon VII compatible with Mac?
I just found this potential "gem" in an AMD community thread.
"Problem solved without RMA, the cooling connector on the GPU was not connected fully.
While I do feel a bit silly for checking on the GPU so late, I wouldn't expect something on it not to be fully functional right out of the box. I would certainly expect me not installing the GPU correctly, but that was ruled out long ago.
So if anyone has similar issues, check the bottom-right corner of the GPU (while facing the fans) and push down on the wired connector. This is not supposed to move or be removed at any point in time but due to shipping it might dislodge slightly."
While I know the symptoms are different, perhaps one of you could have a quick look at this and give it a try. I'm starting to become a little desperate.
I hope they don’t forget about Radeon VII’s, thus far, lackluster optimization and support.
@kushnyc honestly i don't think they will forget, VII is still the most powerful card that they have at the moment, the only one competing with the RTX2080/2080 Ti (Obviously not in eGPU performance but Desktop), and the funny thing is that they decided to unveil the RX5700 targeting the RTX2070, so probably they are still taking more time to have RDNA reaching RTX2080/2080 Ti.
@crhendo was revamping the setup so tried reconnecting the RVII fans, but no go - still max fans on sleep/shutdown. If the problem really was a loose connector then like the link you had, the fans will be on full speed all the time. The fans work properly when the OS is booted and awake, which means the PWM signals are being sent properly.
Decided to break out the Razer Core X Chroma and see if i can squeeze in a small EKWB pump + 240mm rad (after switching the original PSU out to a Corsair SF750).
It's not worth the hassle compared to the simpler breakout of the Mantiz Venus.
For those who have the capability to mount either a water cooling loop or system fans - you all can consider using the Aquacomputer Quadro computer to take over fan control duties - it comes with a thermocouple that you can affix to the back of the Radeon VII (I'm reading water temps since i'm on water cooling). Or you can even break out the Radeon VII's PWM fans connector, splice it to a proper 4-pin fan header, and connect to it.
I suspect the key issue with the board here is 12v rails from the 2x8pin pcie connectors are passed to the RVII fan header. When the egpu goes to sleep or shutdown, the PSU is still kept alive, but the pcie pins do not have any signal on the 3.3V standby state pullups (can only verify with something like an Agilent PCIE protocol analyser, maybe we can chip in to buy for the egpu.io mods a set since it's going to be very useful for their reviews). Thus the pwm signal is missing (board circuitry is powered down), but the 12v rails to the fan header is still active (max fans).
I'm just sticking with this setup and calling it a day. The RVII performs very well with low temps under water, and it was really fun to build a miniaturised standalone CLC.
@kelvin_tan thanks for taking the time to check this out. I suspected this would be the case but it was worth the try.
My Razer Core X setup has no problem handling shutdown and since around Beta 3 the fans only spin up to around 70% during sleep. Odd they you see different behavior.
I live in hope!
Thiswas something I started noticing after i started using the 12v rails for the Aquacomputer and RGB.
When my MBP goes to sleep OR shutdown, the 12v rails are live. I suspect this is because the Mac needs the PSU alive to charge, whether sleeping or shutdown. The only time the PSU really shuts off is when I unplug the tb3 cable, or press the power switch on the PSU itself.
For the Mac mini, your power source is from the 2pin AC plug, so while on sleep the tb3 still sends a signal to the enclosure to stay alive, on shutdown it allows the egpu to power down entirely since the Mac mini does not draw power from the egpu.
So, like the Reddit image above, PSU alive + no pcie signal to the Radeon vii = fans blast.
The second problem is it's not advisable to regulate fans based on tb3 chipset temps, especially when you have no control over curves, etc. You will definitely cook your card very fast.